Side posture pillow



FIG. 1 is a front view (back view is mirror image) of a side posturepillow showing my new design;

FIG. 2 is a side view (opposite side view is mirror image) thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a cross-sectional view of FIG. 1 thereof.

The ornamental design for a side posture pillow, as shown and described.